import Vue from 'vue'
import Router from 'vue-router'

Vue.use(Router)

/* Layout */
import Layout from '@/layout'

/**
 * Note: sub-menu only appear when route children.length >= 1
 * Detail see: https://panjiachen.github.io/vue-element-admin-site/guide/essentials/router-and-nav.html
 *
 * hidden: true                   if set true, item will not show in the sidebar(default is false)
 * alwaysShow: true               if set true, will always show the root menu
 *                                if not set alwaysShow, when item has more than one children route,
 *                                it will becomes nested mode, otherwise not show the root menu
 * redirect: noRedirect           if set noRedirect will no redirect in the breadcrumb
 * name:'router-name'             the name is used by <keep-alive> (must set!!!)
 * meta : {
    roles: ['admin','editor']    control the page roles (you can set multiple roles)
    title: 'title'               the name show in sidebar and breadcrumb (recommend set)
    icon: 'svg-name'             the icon show in the sidebar
    breadcrumb: false            if set false, the item will hidden in breadcrumb(default is true)
    activeMenu: '/example/list'  if set path, the sidebar will highlight the path you set
  }
 */

const getMenuRouter = (menu, isTop) => {
    let menuRouter
    if (isTop && menu.menuType !== 2) {
        menuRouter = {
            name: menu.menuName,
            meta: {
                title: menu.menuName
            },
            component: Layout
        }
        if (menu.menuUrl === '/') {
            menuRouter.redirect = '/dashboard'
        }
    } else if (menu.menuType === 3) { // 按钮，或者是权限点不需要生成路由
        console.log('*类型：权限')
    } else {
        const menuPath = menu.menuPath
        menuRouter = {
            name: menu.menuName,
            meta: {
                title: menu.menuName
            },
            // component: () => import(`@/views/${menuPath}`)
            component: (resolve) => require([`@/views/${menuPath}`], resolve)

        }
    }
    if (menu.menuIcon) {
        menuRouter.meta.icon = menu.menuIcon
    }
    if (menu.children && menu.children.length > 0) {
        menuRouter.children = []
        for (const menu1 of menu.children) {
            if (menu1.menuType === 3) { // 按钮，或者是权限点不需要生成路由
                console.log('*类型：权限')
            } else {
                menuRouter.children.push(getMenuRouter(menu1))
            }
        }
    }
    // 如果这个菜单不是目录不是菜单 ，那么应该隐藏
    if (menu.menuType === 2) {
        menuRouter.hidden = true
    }
    if (menu.menuType !== 3) {
        menuRouter.path = menu.menuUrl
    }
    return menuRouter
}

const createNewRouter = (newRouter) => new Router({
    // mode: 'history', // require service support
    scrollBehavior: () => ({ y: 0 }),
    routes: newRouter
})

const createRouter = () => new Router({
    // mode: 'history', // require service support
    scrollBehavior: () => ({ y: 0 }),
    routes: []
})

const router = createRouter()

// Detail see: https://github.com/vuejs/vue-router/issues/1234#issuecomment-357941465
export function resetRouter(menuList) {
    if (menuList) {
        const newMenu = []
        newMenu.push({
            path: '/',
            component: Layout,
            redirect: '/dashboard',
            children: [{
                path: 'dashboard',
                name: 'Dashboard',
                // component: () => import('@/views/dashboard/index'),
                component: (resolve) => require(['@/views/dashboard/index'], resolve),
                meta: { title: '控制台', icon: 'dashboard' }
            }]
        })
        for (const menu of menuList) {
            newMenu.push(getMenuRouter(menu, true))
        }
        const newAsyncRouter = createNewRouter(newMenu)
        router.matcher = newAsyncRouter.matcher
            // routes没有自动更新
        router.options.routes = newAsyncRouter.options.routes
            // router.addRoutes(newMenu)
    } else {
        const newRouter = createRouter()
        router.matcher = newRouter.matcher // reset router
    }
}

export default router